The United States is wider in the north so crossing in the north of the US takes longer. The most western point on the pacific coast is West Quoddy Head. The most eastern point on the atlantic coast is Cape Alava. The distance between West Quoddy Head and Cape Alava is 2892 miles as the crow flies in a straight line.
There is no east west route that is a 1,000 miles, even in a straight line as the crow flies.
You got east and west mixed up. I’ve been to both places. Quoddy is east, Alava is west.
Cape Alava is on the West Coast, (my) Washington State. But I’ve not yet been there.